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Topaz and Erythrite Physical Properties


Erythrite and Topaz Physical Properties


Physical Properties

Tenacity
Not Available   
Sectile   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.49-3.57   
3.06   

Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle   
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).   

Cleavage
[001] Perfect   
Perfect on {010}; poor on {100} and { 1 02}.   

Mohs Hardness
8   
Not Available   

Chemical Composition
Al2SiO4(F,OH)2   
Co3(AsO4)2•8(H2O)   

Optical Properties >>
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Topaz and Erythrite Chemical Formula

While comparing Topaz and Erythrite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Topaz and Erythrite chemical formula.

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Topaz and Erythrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 3.06 whereas that of Erythrite is 3.06.

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